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Analog Devices Inc./Maxim Integrated MAX32674CGWG+
- Part No.:
- MAX32674CGWG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Sensor and Detector Interfaces
- Package:
- 24-WFBGA, WLBGA
- Datasheet:
-
MAX32674CGWG+.pdf
- Description:
- SENSOR/ALGORITHM HUB
- Quantity:
- Payment:
- Shipping:
Inventory:3,130
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Product details
Overview
MAX32674CGWG+ from Analog Devices is an ultra-low-power biometric algorithm/sensor hub IC designed for wrist-based wearable fitness and medical devices. It processes raw PPG/ECG/accelerometer data into heart rate, SpO₂, HRV, skin contact, and activity metrics; supports I²C host interface (400 kbps) and SPI master sensor interface; operates from 1.71V–3.63V supply; features 32kHz RTC oscillator and embedded bootloader for secure .msbl algorithm updates.
For engineers reviewing the MAX32674CGWG+ datasheet, MAX32674CGWG+ pinout, MAX32674CGWG+ application, or MAX32674CGWG+ equivalent, this page delivers verified functional identity, dual-mode configuration (algorithm hub vs. sensor hub), real-world power optimization behavior, validated pin roles across both modes, and confirmed alternative options for biometric subsystem design.
Technical Context
The MAX32674CGWG+ implements two distinct operational modes: Algorithm Hub mode synchronizes ECG, PPG, and accelerometer data under host control with dynamic AFE register management; Sensor Hub mode offloads sensor driver execution (e.g., MAX86176, LIS2DS12) and motion artifact compensation to the device itself using its dedicated SPI master interface and interrupt-driven AFE_INT/ACC_INT signals.
Its architecture integrates a 100MHz system clock, internal voltage regulator (VREG1), dual-clock domain (32.768kHz RTC + optional 16–32MHz ERFO), and configurable MFIO pin that triggers bootloader mode when held low during reset-enabling authenticated field upgrades of biometric algorithms via encrypted .msbl files.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.71V to 3.63V - supports single-cell Li-ion or coin-cell operation with internal LDO regulation |
| System Clock Frequency | 100MHz - enables real-time biometric computation with sub-10ms latency for pulse detection |
| I²C Slave Interface | Fast Mode (400 kbps), 7-bit address 0x55 - provides host access to processed data and firmware update commands |
| SPI Master Interface | Up to 50MHz SCK - drives optical AFE (e.g., MAX86176) and accelerometer sensors with hardware-timed sampling |
| RTC Operating Current | 0.35μA - maintains timekeeping during deep-sleep states without host intervention |
| Flash Endurance | 10,000 write cycles - supports field-upgradable biometric algorithms over multi-year product lifecycle |
| Operating Temperature | −40°C to +105°C - qualified for body-worn and clinical-grade wearable environments |
Pinout & Package
MAX32674CGWG+ uses a 24-pin Wafer-Level Package (WLP) measuring 2.50mm × 1.75mm with 0.4mm pitch. Pin functions differ between Algorithm Hub and Sensor Hub configurations; dual-mode support requires careful PCB layout planning for shared pins (e.g., MFIO, ACC_CS, ACC_INT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSTN | Active-low reset input | Triggers POR reset; internal VDD pull-up ensures reliable startup; must be deasserted before ACC_CS/ACC_INT go high |
| SLAVE_SCL / SLAVE_SDA | I²C slave interface to host MCU | Host reads biometric results and sends algorithm update commands; supports RESTART and noise-filtered reception |
| MFIO | Bootloader mode control | Held low during reset entry forces bootloader activation for secure .msbl flashing via I²C |
| 32KIN / 32KOUT | RTC crystal oscillator interface | Connects external 32.768kHz watch crystal (CL = 6pF, ESR < 90kΩ); enables low-power timekeeping |
| SENSOR_SCK / SENSOR_MOSI / SENSOR_MISO / AFE_CS / ACC_CS | SPI master interface to sensors | Drives MAX86176 optical AFE and accelerometer; supports independent chip-select lines and interrupt-driven data acquisition |
| VCORE / VDD / VSS | Power and ground terminals | VCORE powers digital core (bypassed with 100nF + 1μF); VDD supplies I/O (same bypassing); VSS is common analog/digital ground |
Key Features
| Feature | Design Value |
|---|---|
| Embedded Biometric Algorithms | Factory-provisioned bootloader executes Analog Devices' certified .msbl files for pulse HR, SpO₂, HRV, and motion-compensated skin contact detection |
| Automatic Exposure Control (AEC) | Multi-dimensional LED current, sampling rate, pulse width, and integration time optimization reduces power by up to 40% vs. fixed-gain AGC |
| FIFO Buffering | 8-byte TX/RX FIFO minimizes host polling frequency and enables burst-mode data transfer during low-power intervals |
| Dual-Mode Architecture | Configurable as Algorithm Hub (host-managed sensor sync) or Sensor Hub (on-device driver execution) - selected at boot via ACC_CS/ACC_INT logic levels |
| Secure Firmware Updates | Encrypted .msbl files with Z- or C-keying ensure algorithm IP protection; C-key version required for customer production use |
Applications
| Wrist-Based Fitness Tracker | Continuous Wearable Medical Monitor |
|---|---|
Use Scenario: Consumer-grade wristband capturing heart rate and SpO₂ during daily activity and sleep. IC Role / Device Role / Timing Role: Algorithm hub processing raw PPG from MAX86176 and accelerometer data to compute motion-robust biometrics in real time. Use Value: Delivers FDA-cleared-level accuracy for resting HR and SpO₂ without requiring host MCU computational overhead or frequent wake-ups. |
Use Scenario: Clinical-grade patch monitor worn for 7-day ambulatory cardiac and respiratory assessment. IC Role / Device Role / Timing Role: Sensor hub managing synchronized MAX86176 PPG and LIS2DS12 accelerometer sampling while maintaining <0.35μA RTC current. Use Value: Extends battery life to >14 days on a single CR2032 cell by eliminating host-driven sensor coordination and enabling deep-sleep between measurements. |
| Wireless Hearable Health Sensor | Portable Point-of-Care Diagnostic Device |
Use Scenario: Bluetooth earbud integrating pulse oximetry and stress-level estimation via HRV analysis. IC Role / Device Role / Timing Role: Low-latency biometric processor feeding real-time HRV and skin contact status to Bluetooth SoC over I²C. Use Value: Enables compact form factor by offloading algorithm execution from resource-constrained audio SoC and reducing thermal load during continuous operation. |
Use Scenario: Handheld SpO₂/capnography device used in emergency triage or home care settings. IC Role / Device Role / Timing Role: Dual-role hub supporting both algorithm-driven SpO₂ calculation and sensor-hub-driven waveform capture for clinician review. Use Value: Allows same hardware platform to serve consumer wellness and professional diagnostic applications via firmware configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar biometric sensor hub applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX32664GWE+T | Single-mode sensor hub (no algorithm hub configuration); lacks ECG support; lower power (0.25μA RTC), smaller 16-pin WLP (2.15mm × 1.75mm) | Targeted at basic PPG-only wearables without ECG or advanced HRV; no support for simultaneous multi-sensor synchronization | Select when cost, size, and power are prioritized over ECG capability and algorithm flexibility |
| ADPD4100BCPZ | Analog front-end only (no embedded algorithms or MCU); requires external processor; higher SNR but no built-in motion compensation | Used in high-precision clinical instruments where raw waveform fidelity is critical and host MCU handles all algorithm execution | Select when full control over signal chain and custom algorithm development is required, not plug-and-play biometric output |
Compared with MAX32674CGWG+, MAX32664GWE+T offers lower BOM cost and footprint for PPG-only use cases but sacrifices ECG integration and dual-mode flexibility; ADPD4100BCPZ provides superior analog performance but shifts algorithm development burden entirely to the host system-making MAX32674CGWG+ optimal for time-to-market-critical wearable medical designs requiring validated biometric outputs.
Availability
MAX32674CGWG+ is available at Aetrix Electronics and suitable for wearable fitness trackers, continuous medical monitors, hearable health sensors, and portable point-of-care diagnostics requiring stable component supply, long-term lifecycle support, and validated biometric algorithm compatibility.
Supply support for MAX32674CGWG+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX32674C belongs to Analog Devices' MAX326xx ultra-low-power biometric SoC family, engineered specifically to accelerate development of FDA-registered and CE-marked wearable medical devices with pre-validated algorithms and sensor drivers.
FAQ
What is the primary function of the MAX32674CGWG+ in a wearable system?
The MAX32674CGWG+ serves as a dedicated biometric algorithm/sensor hub that processes raw optical (PPG) and electrical (ECG) sensor data into clinically relevant outputs-including heart rate, SpO₂, HRV, and motion-compensated skin contact status. It operates either as an Algorithm Hub (host-coordinated multi-sensor sync) or Sensor Hub (on-device driver execution), reducing host MCU workload and system power consumption. The MAX32674CGWG+ does not require external microcontroller intervention for core biometric computation.
How does the MAX32674CGWG+ support firmware updates in the field?
The MAX32674CGWG+ includes a factory-programmed secure bootloader that accepts encrypted .msbl algorithm files delivered over its I²C slave interface. To initiate an update, the host MCU asserts MFIO low during reset to enter bootloader mode, then transmits the C-keyed .msbl file using standard I²C commands. The MAX32674CGWG+ validates encryption keys and writes the new algorithm to flash memory-supporting up to 10,000 update cycles with 10-year data retention at +125°C.
What sensor interfaces does the MAX32674CGWG+ support, and how are they configured?
The MAX32674CGWG+ supports two distinct sensor interface configurations: (1) I²C slave interface (SLAVE_SCL/SLAVE_SDA, 7-bit address 0x55) for bidirectional communication with the host MCU, and (2) SPI master interface (SENSOR_SCK/SENSOR_MOSI/SENSOR_MISO plus AFE_CS/ACC_CS) for direct control of optical AFEs like MAX86176 and accelerometers like LIS2DS12. Configuration is determined at boot by logic levels on ACC_CS and ACC_INT pins-no hardware change is needed to switch modes.
Does the MAX32674CGWG+ include an integrated RTC, and what are its power characteristics?
Yes, the MAX32674CGWG+ integrates a 32.768kHz real-time clock (RTC) powered independently from the main digital core. It operates from an external crystal connected between 32KIN and 32KOUT (CL = 6pF, ESR < 90kΩ) and draws only 0.35μA in active RTC mode-enabling accurate timekeeping during deep-sleep states without waking the host MCU. The RTC remains functional across the full −40°C to +105°C operating temperature range and supports programmable alarms for scheduled sensor wake-ups.
What are the key differences between Algorithm Hub and Sensor Hub modes on the MAX32674CGWG+?
In Algorithm Hub mode, the MAX32674CGWG+ relies on the host MCU to manage sensor register settings, synchronize ECG/PPG/accelerometer sampling, and handle dynamic AFE adjustments-offering maximum flexibility but higher host integration effort and power. In Sensor Hub mode, the MAX32674CGWG+ executes preloaded drivers for MAX86176 and LIS2DS12 autonomously, performing motion artifact compensation and delivering time-aligned biometric results-reducing host interaction and total system power by up to 30%. Both modes use identical MAX32674CGWG+ hardware.
MAX32674CGWG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 24-WFBGA, WLBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Sensor Interface
- Input Type:
- Digital
- Output Type:
- I2C, SPI
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WLP (2.5x1.75)
MAX32674CGWG+ FAQ
1.How can I place an order for MAX32674CGWG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX32674CGWG+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX32674CGWG+ reliable?
The price and inventory of MAX32674CGWG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX32674CGWG+ is usually 5 days.
3.What payment methods are accepted for MAX32674CGWG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX32674CGWG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX32674CGWG+?
MAX32674CGWG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX32674CGWG+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX32674CGWG+?
For technical support, including MAX32674CGWG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX32674CGWG+ requirements.
6.How does Aetrix verify that MAX32674CGWG+ is sourced from the original manufacturer or authorized distributors?
All MAX32674CGWG+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX32674CGWG+ meets industry standards.
7.What is the process for return or replacement of MAX32674CGWG+?
All MAX32674CGWG+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX32674CGWG+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX32674CGWG+ part is unused and in its original packaging.
Return procedure for MAX32674CGWG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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